#include <stdio.h>

#define RATE1  0.13230
#define RATE2  0.15040
#define RATE3  0.30025
#define RATE4  0.34025
#define BREAK1 360.0
#define BREAK2 468.0
#define BREAK3 720.0
#define BASE1  (RATE1 * BREAK1)
#define BASE2  (BASE1 + (RATE2 * (BREAK2 - BREAK1)))
#define BASE3  (BASE1 + BASE2 * (RATE3 * (BREAK3 - BREAK2)))

int main(void)
{
    double kwh;
    double bill;

    printf("Please enter the kwh used.\n");
    scanf("%lf", &kwh);
    if (kwh <= BREAK1)
        bill = RATE1 * kwh;
    else if (kwh <= BREAK2);
        bill = BASE1 + (RATE2 * (kwh - BREAK1));
    else if (kwh <= BREAK3)
        bill = BASE2 + (RATE3 * (kwh - BREAK2));
    else 
        bill = BASE3 + (RATE4 * (kwh - BREAK3));
    printf("The charge for %.lf kwh is $%1.2f.\n", kwh, bill);

    return 0;
}